Crystal Structure of Cs4[{(C6H6)Ru}2Nb6O19]·8MeOH·2H2O. Structural Overview of Hybrid Organometallic Hexametalates of Niobium and Tantalum: Alkali Metal Coordination Behavior
作者： Pavel A. Abramov , Tatiana P. Zemerova , Maxim N. Sokolov
DOI: 10.1007/S10876-016-1116-6
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摘要: Reaction of Cs8[Nb6O19]·14H2O with [(C6H6)RuCl2]2 leads to the formation trans-[{(C6H6)Ru}2Nb6O19]4− (1). Evaporation reaction solution and extraction into methanol (MeOH) yielded Cs4[{(C6H6)Ru}2Nb6O19]·8MeOH·2H2O (1a) as main product together a small amount Cs4[{(C6H6)Ru}2Nb6O19]·4MeOH·6H2O (1b), both characterized by X-ray analysis. These structures complete set known organometallic polyoxoniobate or polyoxotantalate complexes [{Cp*M′}xM6O19]n− [{(C6H6)Ru}xM6O19]n− (M = Nb, Ta; M′ Rh, Ir; x 1, 2; n 6, 4; Cp* η5-C5(CH3)5) give additional information about importance cation–anion interactions in crystal such complexes.
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